Fe3o4/Tea Waste Nanocomposite As Heterogeneous Photo-Fenton Reagent For the Degradation of Methyl Orange

Magnetite nanoparticles (fe3o4) loaded on tea waste (tw) as a low-cost heterogeneous catalyst (mtw) for photo-fenton reaction was successfully synthesized by co-precipitation method# the photocatalytic degradation of methyl orange (mo) as an azo dye in the presence of mtw was investigated under uvc irradiation# the effect of several factors such as initial ph of the dye solution, h2o2 concentration, mtw dosage, and initial concentration of mo were studied on the degradation efficiency# the obtained results indicated that, the degradation efficiency increased by decreasing the initial ph of the mo solution and the initial concentration of mo# the optimum h2o2 concentration was achieved 50 mg/l with heterogeneous photo-fenton process in maximum of 50 min reaction time# the maximum 100% degradation of mo (10 mg/ l) was achieved in mtw/uvc/h2o2 process after 220 min irradiation , in the presence of mtw (1 g/l), and h2o2 (0#5 mm)#